More than 300 London commuter trains have undergone refurbishment as part of a £100m project.
Southern's entire Electrostar fleet now features phone-charging points and improved wifi.
The five-year project was celebrated at Southern's Selhurst depot in south London.
The last of the 304 "Electrostar" trains is due to be returned to service.
Author's summary: Refurbished trains to run for 15 more years.